The unit focuses on devising guideline criteria, following them during the course of the studies and also applying them to evaluate the results. Assessment can be done various ways.
The teacher could monitor the process of the studies with the help of lab notes and other documentation by the pupils.
Predictions and assumptions as well as descriptions of the experiments and a summary of results should either be written down on worksheets or collected in personal interviews.
The teacher should observe the activities of every member of a group and also of the group discussion on the whole, but not interfere too early. He should rather let pupils also move in a not so promising direction, at least for a while.
The presentation of the results in the penal discussion and the ensuing discussion shows how extensively the pupils have worked on their topics and questions.
Furthermore, pupils could also asses themselves and each other within their respective groups.